ASTROSAT CZTI

Data Quality Report

Orbit 01793

Creation date: 2024-06-27T14:12:46.664630
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1G02_020T01_9000000296_01793cztM0_level2.evt modeM0/AS1G02_020T01_9000000296_01793cztM0_level2_quad_clean.evt
Size (bytes)1,080,446,40082,722,240
Size1.0 GB 78.9 MB
Events in quadrant A8,213,825513,645
Events in quadrant B8,445,200522,995
Events in quadrant C7,854,765509,336
Events in quadrant D7,769,511497,860

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B110
C1-1-1
D1-1-1

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290832
B02983010
C0280732
D0277812

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6614580.876928%
B6612671.013309%
C6614510.771092%
D6614711.073480%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 8919 6615 275 275 3.08% 4.16%
B 8919 6614 306 306 3.43% 4.63%
C 8919 6615 238 238 2.67% 3.60%
D 8919 6615 300 300 3.36% 4.54%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 0 231 46175 86.45 2135 2150 509.2
A 15 143 5676 6.92 2135 2150 509.2
A 13 9 5519 6.62 2135 2150 509.2
B 4 200 11599 17.89 2224 2237 523.3
B 0 234 7894 10.81 2224 2237 523.3
B 0 244 6532 8.21 2224 2237 523.3
C 10 82 78703 138.26 1989 2055 554.4
C 9 236 8816 12.2 1989 2055 554.4
C 14 223 7513 9.85 1989 2055 554.4
D 10 199 245299 409.09 1919 1987 594.8
D 13 169 211660 352.53 1919 1987 594.8
D 7 85 66849 109.05 1919 1987 594.8

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter